The use of dedicated long-axis views focused on the left atrium improves the accuracy of left atrial volumes and emptying fraction measured by cardiovascular magnetic resonance

Table 2 Comparison of left atrial volumes and emptying fraction from reference, standard, and focused-left-atrial cine images

	Short-axis cine images (Reference)	Standard Long axis cine images	LA-focused Long axis cine images	p-value
LAVmax (ml)	82 (67–105)	72 (55–93)* ^§	83 (66–103)	0.002
LAVmin (ml)	38 (30–55)	29 (21–48)* ^§	37 (27–53)	0.001
LAVmax-i (ml/m²)	42 (36–54)	38 (28–48)* ^§	43 (37–55)	0.001
LAVmin-i (ml/m²)	20 (16–30)	16 (12–24)* ^§	19 (15–28)	< 0.001
LAEF (%)	52 (45–58)	56 (48–64)*	55 (45–60)	0.008

Data are expressed as median (interquartile range). Kruskal–Wallis one-way analysis of variance (Dunn’s post hoc test). *p < 0.05 vs. Reference; ^§p < 0.05 vs. LA-focused long axis
LAEF left atrial emptying fraction, LAVmax maximum left atrial volume, LAVmin minimum left atrial volume

ISSN: 1532-429X